Water-gage



E. R. ALLEN.

WATER GAGE.

(No Model.)

No. 443,063. Patented Dec. 16, 1890.

THE uanms PETERS cu, mam-uruo -wAsnmeTofl, n. c.

UNITED STATES PATENT OFFICE.

EDYVARD R. ALLEN, OF BUFFALO, ASSIGNOR OF ONE-HALF TO M. PARMELEE, OF DANSVILLE, NEW YORK.

WATER-GAG E.

SPECIFICATION forming part of Letters Patent No. 443,063, dated December 16, 1890.

Application filed April 12, 1890. Serial No. 847,642. (No model.)

To all whom it may concern.-

Be it known that LEDWARD R. ALLEN, a citizen of the United States, and a resident of Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in ater Gages for Steam- Boilers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of a side view, showing my invention in a water-gage. Fig. 2 is a detail section of a portion of same. Fig. 3 is a section of the float. Fig. 4 is a detail view of the float.

The object of this invention is to provide means whereby the exact height of the water in a watergage will be easily and quickly apparent. As ordinarily used, the transparency of the water prevents the engineer from readily not-ing its height in the gage-tube, and he is therefore easily liable to error, which might lead to deplorable results. By the use of my device the height of the water can be seen at a glance and without effort.

In the accompanying drawings, the letter A designates an ordinary water-gage such as is used in connection with steamboilers, and the Water therein shown at B.

C is a small elongated floating article, which is placed in the gage'tube, and is designed to float in vertical position in the top portion. This article is preferably of very near the specific gravity of water, so that its upper end will be flush or nearly flush with the upper surface of the water in the tube.

The elongated sight-float O is designed to be made of glass, being formed usually from a hollow tubular length of the same. It is colored white or light, the coloring-matter being usuallyon the inside of the hollow portion of the float, which is an air-chamber d. The upper end of the float is circumferentially expanded to form a sort of projecting beadguard c, which is intended to prevent the float from sticking to the side of the gagetube, as it would be otherwise apt to do when the water therein is grimy. This beadguard will also clean off small particles which are apt to obscure the inner surface of the gage-tube as the float moves up and down with the water under the variations of pressure. The lower end of the float is weighted, being for the purpose normally made solid, as indicated at g, this solid portion having sufficient length and consistency for grindingoff its lower surface in order to adjust the Weight end to give the proper buoyancy to the sight-float. It being practically difficult to make the tubular air-chambers thereof alike in every particular, such provision for adjustment is necessary.

What I claim, and desire to secure by Letters Patent, is-

The sight-float for water-gages for steamboilers, consisting of the hollow air-chamber having a conical upper end or top, a circumferential bead-guard near said end, and a thickened or extended solid portion at its lower end, all in a single pieceand of glass, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD R. ALLEN. Witnesses:

CLARENCE N. HAMMOND, A. D. BIssELL. 

